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自从武钢扩大、宝钢新建以后,长江中下游地区铁矿石短缺加剧,为了给“七五”规划提供这个地区铁矿石需求总量,马鞍山矿山研究院和冶金部规划院合作,历时三年,编制了包括18个品种的实物型投入产出模型和计算机程序,搜集整理了武钢公司、大冶钢厂、马钢公司、上海冶金局、宝钢总厂、梅山工程指挥部和张家洼工程指挥部等7个部属企业的大量原始资料,求出了上述各企业含铁金属物料的直接消耗系数表、完全消耗系数表以及“七五”期末需矿量、缺矿量。预测的缺矿总量比按传统的铁矿比、钢铁比估算的大26％。
Since WISCO expanded, iron ore shortage in the middle and lower reaches of the Yangtze River increased after Baosteel newly built. In order to provide the total iron ore demand in this area for the “Seventh Five-year Plan”, Maanshan Mining Research Institute cooperated with Planning Institute of Metallurgical Department for three years, The model of in-kind input-output including 18 varieties and computer programs were compiled and collected and commanded by WISCO, Daye Steel, Masteel, Shanghai Metallurgical Bureau, Baosteel Plant, Meishan Engineering Command and Zhangjiawa Project Department of seven subordinate enterprises, a large number of original data, obtained the above-mentioned enterprises of ferrous metal materials direct consumption coefficient table, the complete consumption coefficient table and the “Seventh Five-Year” demand for ore, lack of ore. The total projected deficit is 26% larger than estimated at the conventional iron ore mine.